CVE-2021-30518 : Security Advisory and Response
Discover the impact of CVE-2021-30518, a heap buffer overflow vulnerability in Google Chrome before 90.0.4430.212, allowing remote attackers to exploit systems via a crafted HTML page. Learn about mitigation steps.
Heap buffer overflow vulnerability was discovered in Google Chrome before version 90.0.4430.212, specifically affecting the Reader Mode. This flaw could be exploited by a remote attacker through a malicious HTML page.
Understanding CVE-2021-30518
This section dives into the details of the vulnerability, its impact, technical aspects, and mitigation strategies.
What is CVE-2021-30518?
The CVE-2021-30518 is a heap buffer overflow vulnerability found in Google Chrome's Reader Mode before version 90.0.4430.212. It could allow a remote attacker to trigger heap corruption by tricking a user into visiting a specially crafted HTML page.
The Impact of CVE-2021-30518
The vulnerability could lead to a heap buffer overflow, potentially resulting in the execution of arbitrary code or denial of service (DoS) attacks. This could compromise user data and system integrity.
Technical Details of CVE-2021-30518
Here we discuss the specific technical aspects of the vulnerability.
Vulnerability Description
The heap buffer overflow vulnerability in Google Chrome's Reader Mode could enable a remote attacker to perform heap corruption using a crafted HTML page.
Affected Systems and Versions
Google Chrome versions prior to 90.0.4430.212 are affected by this vulnerability when Reader Mode is enabled.
Exploitation Mechanism
By manipulating the content of a specially crafted HTML page, an attacker can trigger heap corruption and potentially exploit the vulnerability.
Mitigation and Prevention
To safeguard systems from CVE-2021-30518, immediate actions are crucial.
Immediate Steps to Take
Users should update Google Chrome to version 90.0.4430.212 or later to mitigate the risk of exploitation. Disabling Reader Mode can provide an interim solution.
Long-Term Security Practices
Practicing safe browsing habits, avoiding untrusted websites, and keeping browsers up to date can enhance overall security posture.
Patching and Updates
Regularly applying security patches and updates from the official sources is essential to address known vulnerabilities and protect against potential threats.